CVE-2025-46336
Publication date 8 May 2025
Last updated 22 July 2025
Ubuntu priority
Rack::Session is a session management implementation for Rack. In versions starting from 2.0.0 to before 2.1.1, when using the Rack::Session::Pool middleware, and provided the attacker can acquire a session cookie (already a major issue), the session may be restored if the attacker can trigger a long running request (within that same session) adjacent to the user logging out, in order to retain illicit access even after a user has attempted to logout. This issue has been patched in version 2.1.1.
Notes
hlibk
Before ruby-rack version 3, the code was not split between ruby-rack and ruby-rack-session. Therefore, ruby-rack is affected for versions below 3. For versions of ruby-rack 3 or more, ruby-rack-session is affected instead. Upstream assigned two CVEs for the same vulnerability. For ruby-rack, this vulnerability is categorized as CVE-2025-32441. For ruby-rack-session, the vulnerability is CVE-2025-46336.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
4.2 · Medium
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |